Property rights of person dies without will

Hello,

After passing of your father you, your mother and sister will be legal heirs of your father. Property will be divided equally between all of you. Your mother is also entitle for equal share as of you both. You have to get legal heirship from court. Thereafter you can transfer property in your name.

Dear Mr Pawar,

If father makes a will in favour of my daughter from his heriditary property, is it valid or challengeable?

Prakash